Home / 15,427.32-21,289.71-8,353.74

Finding the Fourth Proportional to 15,427.32, 21,289.71 and 8,353.74

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Solution

The fourth proportional to 15,427.32, 21,289.71 and 8,353.74 is: 11,528.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.32 : 21,289.71 = 8,353.74 : x
  2. Step 2: Convert to fraction form
    15,427.32/21,289.71 = 8,353.74/x
  3. Step 3: Cross multiply
    15,427.32x = 21,289.71 × 8,353.74
  4. Step 4: Simplify right side
    15,427.32x = 177,848,702.02
  5. Step 5: Solve for x
    x = 177,848,702.02/15,427.32
  6. Step 6: Final answer
    x = 11,528.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.